There is one in the guild hall, I had mine done in Peter rogers a couple of years ago as I thought a professional pic would be better than a booth. I wasn't very happy with the Peter Rodgers photo but they wouldn't take it again, as they said it was adequate for the purpose! I've not been so unhappy with a passport pic before but was desperate at the time and i went to the post office for another in a booth but the one in WHSmith was broken at the time, i'm stuck with it for 10 years. I thought you'd get something better at the photographers, I won't be using them again. I think there is also a machine at the train station too! I've taken note of where the booths are since then.